Sled.



m/limo rammed Feb. 8,1916. I

2 SHEETS-SHEET 1.

0. w. AHLBOM.,

SLED. APPLICATION mo MAR. 11. 1915.

Patented Feb. 8,1916.

2 SHEETS-SHEET 2 I a mama OSCAR w. Ai-ILBOM, or GARFIELD, UTAH.

SLED.

Specification of Letters Patent I Patented Feb.8,1916.

Application filed March 11, 1915. Serial No. 13,802.

To all whom it may concern:

Be it known that I, OSCAR W. AHLBoM, a citizen of the United States, residing at Garfield, in the county of Salt Lake,'State of Utah, have invented certain new and useful Improvements in Sleds; and I do hereby declare the following to be a' full,"

clear, and exact description of the invention, such as will enable others skilled in theart to which its appertains to make and use the same. y

This invention relates to a sled and particularly to the typeused on snow or ice.

An object of the invention resides in the provision of a device of this character in which mechanism is provided so that the operator can propel the sled.

A further object of the invention resides in so constructing the propelling mechanism that when it is returning to its initial position it will be lifted from the ground.

With these and other objects in view,such as will appearas the description progresses, my invention comprises the combination-and arrangement of parts as set forth in and falling within the scope of the appended claims.

Referring to the drawing: Figure 1 is a 7 side elevation of an embodiment of my device. same, with parts omitted to avoid confusion. Fig. 3 is a detail, showing the manner of mounting the propelling rods on the frame. Fig. I is a fragmental section showing the means for actuating the supplemental runner. Fig. 5 is an enlarged detail of the front runner partly broken away to show the supplemental runner. Fig. 6 is a sectional view on line 66 of Fig. 1. Fig. ,7 is a detail view of the brake mechanism. Fig. 8 is a fragmental view, showing a modification of thedevice.

Referring to the drawing wherein llke parts are indicated by like characters throughout the several views: My invention comprises a frame 1 which consists of a base plate 2 supported on a front runner 3 which is pivoted 'on the ears 4:. The ears 4 are rotatably mounted in a bearing 5 in the base and have secured thereto an upwardly extending rod 6 which projects through and is rotatably mounted'in a bearing 7 on a beam 8 of the said frame, which beam is supported by standards 9 adjacent the forward end and standards 10 adjacent a the rear end. The upper end of thisrod Fig. 2' is a rear elevationof the 6 is provided With a handle 11 by means of which the forward runner 3 may be turned to guide the sled. The plate 2 is supported at its rear end by a double rear runner 11 secured rigidly to the plate 2. Located on the beam 8 is a seat 12 for the operator.

In order. that the sled may be propelled,

I have providedpropelling rods 13 and 14 which are slidably mounted on. bolts 15 on the standards 9, and said bolts extending through slots 16 in the said rods, these rods extend downwardly and rearwardly from the bolts 15 and have spurs 17 on the rear ends thereof for engaging the ground. In

order that these rods may .be alternately pushed rearwardly and pulled forwardly,

I have rotatably mounted between the standards 9 below the bolts 15 on the shaft 18, a drive. wheel 19 which may be rotated by the operator by means of cranks 20 on which pedals 22 are secured, the said cranks being secured to the shaft 18.- Rotatably mounted between the standards 10 is a smaller wheel or disk 23. A belt or chain 24.- passes over the wheel 19 and thencearound the wheel 23 and is maintained taut by means of an adjustable tightener 25.

Secured to the shaft 26 on which the wheel 23 is mounted and on the outer sides of the standards 10 are oppositely extending cranks 27 to which are pivotally secured pitmen 27 and 28 which pitmen are in turn pivotally secured to the rods 13 and 14:, respectively, below the lower end of the sequently, because of the fact that the pit- 1 men 27 and 28 connect the cranks 27 to the rods 13 and 14-, the'said rods will be alterwheel 19 rotates, the wheel 23 by means of nately moved forwardly and rearwardly to propel the sled;

T In order that the rods may be lifted on their forward stroke, that is, to their initial positions, I have provided downwardly eX-' tending arms 30 and 30ihingedly connected, 1

as at 31, to the beam 8, which arms converge inwardly toward their lower ends and are I secured together by a link 32 which is piv- The ends of these arms are located between guides 33 so that,

oted to the said arms.

their lateral movement with relation to the base 2 is limited. Formed on the side of the wheel '23 adjacent the arm 30 is an arcuate cam 34 which is constructed and arranged to engage a roller 35 on the saidarm 30so that the said arms 30 and 30 are moved about their hinges in one direction. When the cam disengages the roller 35 a spring 36 returns the arms 30 and 30 to the opposite side of the base. On these arms 30 and 30 are provided rollers 37 and 38 on which the rods 13 are adapted to rest and which are moved beneath the said rods alternately as they move forwardly by the engagement of the cam 34 with the roller 35 and by the spring 36.

In operation when the rod 13 begins its forward motion the cam 34 engages the roller 35 and pushes the roller 37 beneath the said rod 13 so that upon its forward move ment the spur 17 thereon is lifted from the ground. At this time the rod 14 is moved rearwardly and is disengaged from the roller 38, the said roller being moved from beneath the rod 14 by the action of the cam 34. During the entire forward movement of the ,rod 13 the cam 34 engages the roller 35 on the arm 30 and consequently the roller 37 is maintained beneath the rod 13 during this entire: forward movement. However, as soon as the rod 13 reaches its forward position, at which time the rod 14 is in its rear-' most position the cam 34 disengages the roller 35 and the spur 17 on the rod 13 drops into engagement with the ground. Simultaneously the spring 36 moves the roller 38 beneath the propelling rod 14 and'then as the operator rotates the wheel 19 the rod 14 will be pulled forwardly and lifted and the rod 13 pushed rearwardly with the spur 17 thereon penetrating the ground. Of course the rotation'of the wheel 19 is continuous and therefore the rods 13 and 14 will be alternately pulled forwardly and pushed rearwardly in the manner described so that the sled will be given a constant propulsion.

In order that the steering of the sled may be accomplished readily so that the rear runher will follow readily, I have provided a supplemental runner 39 located in a longitudinally extending slot 40 in the front runner 3. Que end of this supplemental runner 39 is pivoted within the slot at 41 and the other end has an upwardly extending finger 42. This finger is normally pushed upwardly by a leaf spring 43 which bears against a pin 44 thereon. Secured to the under face of the base 2 above the finger 42 is a member 45 having diverging cam surfaces 46 and 47 which are arranged to bear against the upper-end of the finger 42. l/Vhen the sled is being turned either one of the cam surfaces 46 or 47, according to the'direction of turning, bears against the upper end of the finger 42 and pushes the supplemental runner 39 downwardly so that the weight of the sled at the front end is supported-thereby and the front end of the sled is raised. This will cause the rear runner to follow the front runner in turning.

; v.In order that the sled may be stopped at the will of the operator, I have provided a spring pressed rod 48 which extends downwardly through the rear runner but is nor mally pressed upwardly by a spring 49.

This rod 48 is pushed downwardly against each of the runners with skate members 52 which are secured to the runners below the same by U-shaped clips 53 and pins 54 passing through .the clips and through the runners.

From the foregoing description it will be .seen that I have provided a sled which will be given atconstant movement by rearwardly extending propelling rods which are altenately pushed rearwardly and pulled forwardly and which on their forward move 'ment are lifted from engagement with the ground.

I have provided mechanism by means of which the rods will be alternately engaged and consequently lifted from the ground.

While I have illustrated and described a particular embodiment of my invention, 1 have merely done so for the sake of convenience and 1 do not wish to be limited to that particular embodiment of my invention as it is obvious :that numerous changes may be made within the details of construction thereof without in any way departing from the spirit of the invention or exceeding the scope of the appended claims.

What I claim is 1. In a sled, the combination with runners, of a frame mounted thereon,;propelling rods slidably and pivotally mounted on said frame and having spurs on the ends thereof for penetrating the ground, means for alternately moving the rods forwardly and rearwardly, means alternately engageable with the rods on their forward movement to lift the same and automatically operated means for effecting said engagement.

2. In a sled, the combination with runners, of a frame mounted :thereon, propel ling rods slidably and pivotally'mounted on a drive wheel rotatably mounted between the first mentioned standards, a second wheel rotatably mounted between thesecond mentioned standards,--a belt passing over said wheels, bolts on the first mentioned standards extending inwardly therefrom, propelling rods slidably and pivotally mounted on said bolts, pitmen connected to the second mentioned wheel at diametrically opposite points thereon and pivotally secured to the said rods, means for rotating the wheels whereby the rods will be alternately moved forwardly and rearwardly and means for alternately engaging the rods to lift the same about their pivots.

4. In a sled, the combination with a frame, of runners for supporting the same, said frame consisting of a base, standards extending upwardly therefrom, and a beam secured to the upper ends of the standards, a drive wheel rotatably mounted between two adjacent standards, a second wheel rotatably mounted between another two of said standards, propeller rods slidably and pivotally mounted on the frame, means connecting the rods and second mentioned wheel to alternately move the rods forwardly and rearwardly, downwardly extending converging arms hingedly secured to the said beam and having rollers on the outer faces thereof, a cam on the said last mentioned wheel, a roller on one of said arms constructed and arranged to be engaged by said cam whereby the roller on one of the arms will be moved beneath the adjacent rod, and a spring for moving the roller on the other arm beneath the other rod upon the disengagement of the pivotally secured to the front "runner and normally lying above the plane of the lower edge thereof, and means for automatically projecting the said supplemental runner outwardly upon the pivotal movement of the front runner.

6. In a sled, the combination with front and rear runners, of a frame mounted thereon, the front runner being pivotally secured and the rear runners rigidly secured on the frame and means for lifting the front of the sled upon the pivotal movement of the front runner.

In testimony whereof, I aflix my signature, in the presence of two witnesses.

OSCAR W. AHLBOM.

Witnesses:

MARY TOFALL, NEPHI JENsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner-of Patents, Washington, I). G. 

